diff --git a/src/FlagRenderer.sol b/src/FlagRenderer.sol
index 7ba5421..c9c2bc6 100644
--- a/src/FlagRenderer.sol
+++ b/src/FlagRenderer.sol
@@ -251,7 +251,9 @@ contract FlagRenderer {
             image = string.concat(
                 image,
                 uint256(uint128(_tokenId)).toString(), // Rank
-                '</tspan></text><text class="b d i" x="187" y="453">Rank</text><path class="j" d="M'
+                ' </tspan><tspan class="a d i" y="435">/ ',
+                uint256(_solves).toString(), // Solvers
+                '</tspan></text><text class="b d i" x="187" y="453">Rank</text><path class="j" d="M'                
                 '289 429v4h3m3 0a6 6 0 1 1-12 0 6 6 0 0 1 12 0z"/><text class="a c h" x="303" y="43'
                 '3">',
                 _formatTime(_solveTime), // Solve time
@@ -294,7 +296,7 @@ contract FlagRenderer {
     {
         uint256 seed = uint256(keccak256(abi.encodePacked(_tokenId, _solveMetadata)));
         // Select the colormap.
-        bytes32 colormapHash = [
+        bytes8 colormapHash = bytes8([
             bytes32(0xfd29b65966772202ffdb08f653439b30c849f91409915665d99dbfa5e5dab938),
             bytes32(0x850ce48e7291439b1e41d21fc3f75dddd97580a4ff94aa9ebdd2bcbd423ea1e8),
             bytes32(0x4f5e8ea8862eff315c110b682ee070b459ba8983a7575c9a9c4c25007039109d),
@@ -313,7 +315,7 @@ contract FlagRenderer {
             bytes32(0x87970b686eb726750ec792d49da173387a567764d691294d764e53439359c436),
             bytes32(0xaa6277ab923279cf59d78b9b5b7fb5089c90802c353489571fca3c138056fb1b),
             bytes32(0xdc1cecffc00e2f3196daaf53c27e53e6052a86dc875adb91607824d62469b2bf)
-        ][seed % 18];
+        ][seed % 18]);
 
         // We start at the middle of the board.
         uint256 index = 210;
diff --git a/src/interfaces/IColormapRegistry.sol b/src/interfaces/IColormapRegistry.sol
index f19f194..7df040d 100644
--- a/src/interfaces/IColormapRegistry.sol
+++ b/src/interfaces/IColormapRegistry.sol
@@ -29,12 +29,12 @@ interface IColormapRegistry {
     // -------------------------------------------------------------------------
 
     /// @notice Emitted when a colormap already exists.
-    /// @param _colormapHash Hash of the colormap's definition.
-    error ColormapAlreadyExists(bytes32 _colormapHash);
+    /// @param _hash Hash of the colormap's definition.
+    error ColormapAlreadyExists(bytes8 _hash);
 
     /// @notice Emitted when a colormap does not exist.
-    /// @param _colormapHash Hash of the colormap's definition.
-    error ColormapDoesNotExist(bytes32 _colormapHash);
+    /// @param _hash Hash of the colormap's definition.
+    error ColormapDoesNotExist(bytes8 _hash);
 
     /// @notice Emitted when a segment data used to define a colormap does not
     /// follow the representation outlined in {IColormapRegistry}.
@@ -69,33 +69,45 @@ interface IColormapRegistry {
     /// @param _hash Hash of `_paletteGenerator`.
     /// @param _paletteGenerator Instance of {IPaletteGenerator} for the
     /// colormap.
-    event RegisterColormap(bytes32 _hash, IPaletteGenerator _paletteGenerator);
+    event RegisterColormap(bytes8 _hash, IPaletteGenerator _paletteGenerator);
 
     /// @notice Emitted when a colormap is registered via segment data.
     /// @param _hash Hash of `_segmentData`.
     /// @param _segmentData Segment data defining the colormap.
-    event RegisterColormap(bytes32 _hash, SegmentData _segmentData);
+    event RegisterColormap(bytes8 _hash, SegmentData _segmentData);
 
     // -------------------------------------------------------------------------
     // Storage
     // -------------------------------------------------------------------------
 
-    /// @param _colormapHash Hash of the colormap's definition (segment data).
+    /// @param _hash Hash of the colormap's definition (palette generator).
+    /// @return IPaletteGenerator Instance of {IPaletteGenerator} for the
+    /// colormap.
+    function paletteGenerators(bytes8 _hash) external view returns (IPaletteGenerator);
+
+    /// @param _hash Hash of the colormap's definition (segment data).
     /// @return uint256 Segment data for red's color value along the colormap.
     /// @return uint256 Segment data for green's color value along the colormap.
     /// @return uint256 Segment data for blue's color value along the colormap.
-    function segments(bytes32 _colormapHash) external view returns (uint256, uint256, uint256);
-
-    /// @param _colormapHash Hash of the colormap's definition (palette
-    /// generator).
-    /// @return IPaletteGenerator Instance of {IPaletteGenerator} for the
-    /// colormap.
-    function paletteGenerators(bytes32 _colormapHash) external view returns (IPaletteGenerator);
+    function segments(bytes8 _hash) external view returns (uint256, uint256, uint256);
 
     // -------------------------------------------------------------------------
     // Actions
     // -------------------------------------------------------------------------
 
+    /// @notice Batch register colormaps with palette generators.
+    /// @param _paletteGenerators Array of {IPaletteGenerator} instances for the
+    /// colormap.
+    function batchRegister(IPaletteGenerator[] memory _paletteGenerators) external;
+
+    /// @notice Batch register colormaps with segment data that will be read
+    /// via piece-wise linear interpolation.
+    /// @dev See {IColormapRegistry} for how the segment data should be
+    /// structured.
+    /// @param _segmentDataArray Array of segment data tuples defining the
+    /// colormap.
+    function batchRegister(SegmentData[] memory _segmentDataArray) external;
+
     /// @notice Register a colormap with a palette generator.
     /// @param _paletteGenerator Instance of {IPaletteGenerator} for the
     /// colormap.
@@ -118,7 +130,7 @@ interface IColormapRegistry {
     /// number in [0, 1]. Note that the function *will not* revert if
     /// `_position` is an invalid input (i.e. greater than 1e18). This
     /// responsibility is left to the implementation of {IPaletteGenerator}s.
-    /// @param _colormapHash Hash of the colormap's definition.
+    /// @param _hash Hash of the colormap's definition.
     /// @param _position 18 decimal fixed-point number in [0, 1] representing
     /// the position in the colormap (i.e. 0 being min, and 1 being max).
     /// @return uint256 Intensity of red in that color at the position
@@ -127,15 +139,26 @@ interface IColormapRegistry {
     /// `_position`.
     /// @return uint256 Intensity of blue in that color at the position
     /// `_position`.
-    function getValue(bytes32 _colormapHash, uint256 _position)
+    function getValue(bytes8 _hash, uint256 _position)
         external
         view
         returns (uint256, uint256, uint256);
 
+    /// @notice Get the hexstring for a color in a colormap at some position.
+    /// @param _hash Hash of the colormap's definition.
+    /// @param _position Position in the colormap (i.e. 0 being min, and 255
+    /// being max).
+    /// @return string Hexstring excluding ``#'' (e.g. `007CFF`) of the color
+    /// at the position `_position`.
+    function getValueAsHexString(bytes8 _hash, uint8 _position)
+        external
+        view
+        returns (string memory);
+
     /// @notice Get the red, green, and blue color values of a color in a
     /// colormap at some position.
     /// @dev Each color value will be returned as a `uint8` number in [0, 255].
-    /// @param _colormapHash Hash of the colormap's definition.
+    /// @param _hash Hash of the colormap's definition.
     /// @param _position Position in the colormap (i.e. 0 being min, and 255
     /// being max).
     /// @return uint8 Intensity of red in that color at the position
@@ -144,19 +167,8 @@ interface IColormapRegistry {
     /// `_position`.
     /// @return uint8 Intensity of blue in that color at the position
     /// `_position`.
-    function getValueAsUint8(bytes32 _colormapHash, uint8 _position)
+    function getValueAsUint8(bytes8 _hash, uint8 _position)
         external
         view
         returns (uint8, uint8, uint8);
-
-    /// @notice Get the hexstring for a color in a colormap at some position.
-    /// @param _colormapHash Hash of the colormap's definition.
-    /// @param _position Position in the colormap (i.e. 0 being min, and 255
-    /// being max).
-    /// @return string Hexstring excluding ``#'' (e.g. `007CFF`) of the color
-    /// at the position `_position`.
-    function getValueAsHexString(bytes32 _colormapHash, uint8 _position)
-        external
-        view
-        returns (string memory);
-}
+}
\ No newline at end of file